The opening moments of the much-anticipated Apple Tree Yard were memorable for stars Emily Watson and Ben Chaplin bonking in a broom cupboard at the House of Commons.

It was the hiding place of suffragette Emily Davison on the night of the 1911 census so she could list her place of residence as the cradle of democracy... but may now be forever remembered for the passionate TV tryst.

However a Commons cupboard is far from the only unusual setting for steamy sex, going by these celebrity confessions:

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Car Booty: John Profumo and Christine Keeler - his Morris Mini Minor

John Profumo, Secretary of State for War, lied to Parliament about his affair with Christine Keeler (Image: Hulton Archive)

Christine Keeler in a bikini top, around the time of the affair (Image: Getty Images)

It was one of the biggest political scandals of the 20th century.

John Profumo and 19-year-old model Christine met at an exclusive party at Cliveden House, Berkshire, in 1961 and had sex in the former Cabinet minister’s bright red Mini, Keeler claimed.

Married Profumo, then 48, was the Conservative Secretary of State for War at the time and fled from the press to his family home in Stratford-on-Avon after the scandal broke.

Keeler claimed the pair had sex in a bright red Mini (Image: PA)

He resigned in disgrace in 1963 when it emerged Profumo had slept with Keeler, unaware she was also sleeping with Yevgeny Ivanov, a naval attaché at the Soviet Embassy.

The Royal Albert Hall is not the usual place for nookie (Image: Daily Mirror)

Almost three decades ago Brad and Sinitta were a hot couple and they got frisky in a private box at the Royal Albert Hall during a concert.

Sinitta, now 53, said: “He grabbed me and we started rolling about on the floor. We couldn’t help ourselves. Someone in the box above leant over and tried to take photos and an usher knocked on the door, asking us if we were ok.”

The Grand Canyon: Jenny McCarthy in the Grand Canyon, Arizona

Actress Jenny McCarthy said it was the worst sex she's ever had (Image: NBCUniversal)

Having sex at one of the world’s seven natural wonders might sound special, but US actress Jenny, 44, revealed: “It’s not fun. There’s scorpions, stones and dirt and it’s hot. It was the strangest and worst sex of my life, but I can say ‘I did it in the Grand Canyon’.

As she points out, there are scorpions in the Grand Canyon (Image: Getty Images)

Members Only: Clarissa Dickson Wright in Parliament

Clarissa Dickson Wright made the claim in her book (Image: Getty Images Europe)

House of Commons where the act allegedly took place (Image: Universal Images Group Editorial)

The outspoken cook and TV presenter, who died aged 66 in 2014, will always be remembered for the salacious claim in her book, Spilling the Beans.

Clarissa claimed she once had sex with an anonymous MP behind the Speaker’s chair in Parliament.

She said: “He suggested I might like to see the floor of the House. The memory still makes me laugh when I watch all those politicians pontificating.”